>I argued for the contraction "amn't" through sixth grade, but my teachers kept correcting it. I asked my high school English teacher the proper way to contrac

>I argued for the contraction "amn't" through sixth grade, but my teachers kept correcting it. I asked my high school English teacher the proper way to contract "should not have" in writing; I was trying my hand at short stories, and I wanted it in the dialogue. She said it wasn't a thing. Not that there's no standard convention, but that it's not a thing. Despite me saying and hearing "shouldn't've" all the time.